Abstract
This paper treats the recently emerging self-coherent multisymbol
decision-feedback-aided detection techniques for optical differential phase-shift keyed
(DPSK) transmission based on both an optical preprocessing approach and an electronic
postprocessing approach. We present in detail i) the generation of a synthetic low
phase-noise effective local oscillator out of the modulated optical data itself, and its
estimation theory interpretation; ii) the role of polyphase (interleaved) DPSK in the
optical preprocessing approach in easing the decision feedback realization requirements;
iii) detection of <i>M</i>-ary DPSK modulation formats for general <i>M</i>, and
differential quadrature phase-shift keying in particular; iv) three alternative
integrated-optoelectronic receiver implementations for the optical preprocessing
approach detailing the structures of the interferometric front-end and the high-speed
electronic analog and digital building blocks; and v) the principle, and alternative
implementations, of the digital postprocessing approach to self-coherent detection. We
finally compare the capabilities of the emerging self-coherent detection and digital
coherent detection techniques.
© 2008 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription